The effect of dentin disinfectants on shear bond strength of resin-modified glass-ionomer materials.
The purpose of this study was to investigate the effect of dentinal disinfection with a 2% chlorhexidine or a 0.11% I2-KI/CuSO4 solution on the shear bond strength of three resin-modified glass-ionomer cements: Fuji II LC, Photac-Fil, and Vitremer. The occlusal surfaces of extracted human teeth were flattened to dentin. Specimens were randomly assigned to one of nine treatment groups (n = 12). For each glass-ionomer material, there was a control group and two treatment groups in which the dentin was treated with either a 2% chlorhexidine or a 0.11% I2-KI/CuSO4 solution before the dentin was treated with the recommended dentin conditioner prior to glass-ionomer bonding. Specimens were stored for 1 day in water, thermocycled, and tested in shear until failure. The chlorhexidine solution did not significantly affect the shear bond strengths of any of the cements, but the I2-KI/CuSO4 solution significantly lowered the bond strengths of Vitremer and Fuji II LC compared to the controls.
Cunningham
M P
MP
Naval Dental School, Bethesda, Maryland, USA.
Meiers
J C
JC
D002710:Chlorhexidine / Q000494:pharmacology*; D003188:Composite Resins / Q000737:chemistry*; D019327:Copper Sulfate / Q000494:pharmacology*; D001840:Dental Bonding; D019551:Dental Disinfectants / Q000494:pharmacology*; D003804:Dentin / Q000187:drug effects*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D066298:In Vitro Techniques; D008963:Molar; D013499:Surface Properties; D013718:Tensile Strength
D003188:Composite Resins; D019551:Dental Disinfectants; D005899:Glass Ionomer Cements; D019327:Copper Sulfate; D002710:Chlorhexidine